Pressure-induced collapse of ferromagnetism in cobalt up to 120 GPa as seen via x-ray magnetic circular dichroism

Torchio, R., Monza, A., Baudelet, F., Pascarelli, S., Mathon, O., Pugh, E., Antonangeli, D., Itie, J. P. (2011) Pressure-induced collapse of ferromagnetism in cobalt up to 120 GPa as seen via x-ray magnetic circular dichroism. Physical Review B: Condensed Matter and Materials Physics, 84 (6). ISSN 0163-1829. (doi:10.1103/PhysRevB.84.060403) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:40456)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided.
Official URL: http://dx.doi.org/10.1103/PhysRevB.84.060403

Abstract

The magnetism and structure of compressed Co has been studied up to 120 GPa using K-edge x-ray magnetic circular dichroism (XMCD) and x-ray absorption near edge spectroscopy (XANES). The XMCD signal decreases linearly with pressure and is totally suppressed around 120 GPa at ambient temperature. We detect local fcc-like atomic configurations starting from 80 GPa and at 120 GPa these represent at least 40% of the total. Supporting theoretical calculations indicate that the mixed hcp/fcc phase above 120 GPa is nonmagnetic. Comparison between the pressure evolution of magnetism and structure highlights major differences between the Fe and Co cases.

Item Type:	Article
DOI/Identification number:	10.1103/PhysRevB.84.060403
Additional information:	article number: 060403;
Uncontrolled keywords:	Physics of Quantum Materials
Subjects:	Q Science > QC Physics
Divisions:	Divisions > Division of Natural Sciences > Physics and Astronomy
Depositing User:	Emma Pugh
Date Deposited:	07 Mar 2014 00:05 UTC
Last Modified:	05 Nov 2024 10:24 UTC
Resource URI:	https://kar.kent.ac.uk/id/eprint/40456 (The current URI for this page, for reference purposes)

University of Kent Author Information

Pugh, E..

Creator's ORCID:	https://orcid.org/0000-0001-7287-0839
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